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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 $5,472 USD
As of October 30, 2026
Save $6,579 USD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $12,051 USD 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 $5,472 to $12,051, a $6,579 spread on the same certified stone. NZ Jewellers lists it at $12,051. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $12,051 USD|Low: $5,380 USD|High: $12,051 USD|Avg: $7,041 USD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
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Retailer 25
Retailer 26
October 30, 2026
Retailer 3$5,380 USD
Retailer 6$5,472 USD
Retailer 7$5,534 USD
Retailer 12$5,693 USD
Retailer 22$5,699 USD
Retailer 8$5,770 USD
Retailer 14$6,025 USD
Retailer 4$6,026 USD
Retailer 26$6,065 USD
Retailer 18$6,245 USD
Retailer 15$6,392 USD
Retailer 9$6,427 USD
Retailer 10$6,528 USD
Retailer 5$6,628 USD
Retailer 16$6,630 USD
Retailer 21$6,648 USD
Retailer 20$6,863 USD
Retailer 25$6,994 USD
Retailer 17$7,129 USD
Retailer 19$7,255 USD
Retailer 13$7,433 USD
Retailer 11$7,532 USD
Retailer 2$7,710 USD
Retailer 24$8,774 USD
Retailer 23$10,095 USD
NZ Jewellers$12,051 USD

30 data points across 26 retailers

25 retailers$5,472 USD to $12,051 USD

Retailer 1
-
$5,380 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$5,472 USD
View
A
Retailer 3
-
$5,534 USD
View
A
Retailer 4
-
$5,693 USD
View
A
Retailer 5
-
$5,699 USD
View
B+
Retailer 6
-
$5,770 USD
View
B+
Retailer 7
-
$6,025 USD
View
Final sale: no returns
B+
Retailer 8
-
$6,026 USD
View
A
Retailer 9
-
$6,065 USD
View
B+
Retailer 10
-
$6,245 USD
CA$8,673 CAD
View
B+
Retailer 11
-
$6,392 USD
View
B+
Retailer 12
-
$6,427 USD
View
B+
Retailer 13
-
$6,528 USD
View
B+
Retailer 14
-
$6,628 USD
View
Retailer 15
-
$6,630 USD
View
Price last confirmed 16 days ago
B+
Retailer 16
-
$6,648 USD
View
B+
Retailer 17
-
$6,863 USD
£5,404 GBP
View
Retailer 18
-
$6,994 USD
A$10,759 AUD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
$7,129 USD
View
B+
Retailer 20
-
$7,433 USD
£5,853 GBP
View
B
Retailer 21
-
$7,532 USD
View
B
Retailer 22
-
$7,710 USD
€7,343 EUR
View
B
Retailer 23
-
$8,774 USD
ZAR 141,750 ZAR
View
B
Retailer 24
-
$10,095 USD
£7,949 GBP
View
Most Expensive
B
NZ Jewellers
2943a18f-7cc3-4352-af1e-c57bdbc3520e · Oct 30
$12,051 USD
View
24 more retailers have this diamond
Prices start from $5,472 USDSave up to $6,579 USD

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
$5,472 USD