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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1528839139

Certificate GIA 1528839139

Diamond specifications and retailer prices

From $6,878 SGD
$5,380 USD
As of November 1, 2026
Save $8,528 SGD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $15,406 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1528839139. Listed at 25 retailers as of October 30, 2026, with prices from $6,878 to $15,406, a $8,528 spread on the same certified stone. NZ Jewellers lists it at $15,406. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1528839139
Dimensions7.40 × 7.46 × 4.67 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.40 mm7.46 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1528839139
Side View
Table 56.0%Crown 35.5°Girdle: Medium to Slightly ThickPavilion 40.8°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $15,406 SGD|Low: $6,878 SGD|High: $15,406 SGD|Avg: $8,957 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
November 2, 2026
Retailer 3$6,878 SGD
Retailer 6$6,995 SGD
Retailer 7$7,075 SGD
Retailer 12$7,278 SGD
Retailer 23$7,285 SGD
Retailer 8$7,376 SGD
Retailer 14$7,702 SGD
Retailer 4$7,704 SGD
Retailer 25$7,753 SGD
Retailer 18$7,983 SGD
Retailer 15$8,172 SGD
Retailer 9$8,216 SGD
Retailer 10$8,345 SGD
Retailer 5$8,473 SGD
Retailer 16$8,476 SGD
Retailer 22$8,499 SGD
Retailer 13$8,775 SGD
Retailer 24$8,941 SGD
Retailer 17$9,114 SGD
Retailer 2$9,474 SGD
Retailer 11$9,629 SGD
Retailer 19$9,812 SGD
Retailer 21$11,318 SGD
Retailer 20$12,838 SGD
NZ Jewellers$15,406 SGD

31 data points across 25 retailers

25 retailers$6,878 SGD to $15,406 SGD

A
Cheapest Retailer
-
$6,878 SGD
$5,380 USD
A
Retailer 2
-
$6,995 SGD
$5,472 USD
View
A
Retailer 3
-
$7,075 SGD
$5,534 USD
View
A
Retailer 4
-
$7,278 SGD
$5,693 USD
View
A
Retailer 5
-
$7,285 SGD
$5,699 USD
View
B+
Retailer 6
-
$7,376 SGD
$5,770 USD
View
B+
Retailer 7
-
$7,702 SGD
$6,025 USD
View
Final sale: no returns
B+
Retailer 8
-
$7,704 SGD
$6,026 USD
View
A
Retailer 9
-
$7,753 SGD
$6,065 USD
View
B+
Retailer 10
-
$7,983 SGD
CA$8,673 CAD
View
B+
Retailer 11
-
$8,172 SGD
$6,392 USD
View
B+
Retailer 12
-
$8,216 SGD
$6,427 USD
View
B+
Retailer 13
-
$8,345 SGD
$6,528 USD
View
B+
Retailer 14
-
$8,473 SGD
$6,628 USD
View
Retailer 15
-
$8,476 SGD
$6,630 USD
View
Price last confirmed 18 days ago
B+
Retailer 16
-
$8,499 SGD
$6,648 USD
View
B+
Retailer 17
-
$8,775 SGD
£5,404 GBP
View
Retailer 18
-
$8,941 SGD
A$10,759 AUD
View
Price last confirmed 11 days ago
B+
Retailer 19
-
$9,114 SGD
$7,129 USD
View
B+
Retailer 20
-
$9,474 SGD
£5,835 GBP
View
B
Retailer 21
-
$9,629 SGD
$7,532 USD
View
B+
Retailer 22
-
$9,812 SGD
€7,310 EUR
View
B
Retailer 23
-
$11,318 SGD
ZAR 143,021 ZAR
View
B
Retailer 24
-
$12,838 SGD
£7,907 GBP
View
Most Expensive
B
NZ Jewellers
2943a18f-7cc3-4352-af1e-c57bdbc3520e · Oct 30
$15,406 SGD
$12,051 USD
View
24 more retailers have this diamond
Prices start from $6,878 SGDSave up to $8,528 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.60ct Round
$6,878 SGD