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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6555649011

Certificate GIA 6555649011

Diamond specifications and retailer prices

From $7,654 SGD
$5,987 USD
As of November 1, 2026
Save $5,940 SGD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,010 SGD at NZ Jewellers · As of September 19, 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 6555649011. Listed at 14 retailers as of October 26, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555649011
Dimensions7.44 × 7.40 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.44 mm7.40 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555649011
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,780 SGD|Low: $6,470 SGD|High: $21,264 SGD|Avg: $8,603 SGD|+8.6%
Retailer 1
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
November 2, 2026
Retailer 2$6,470 SGD
Retailer 4$6,480 SGD
Retailer 3$6,823 SGD
Retailer 5$7,053 SGD
Retailer 9$7,277 SGD
Retailer 6$7,562 SGD
Retailer 18$7,654 SGD
Retailer 7$7,811 SGD
Retailer 14$7,848 SGD
Retailer 15$8,033 SGD
Retailer 10$8,275 SGD
Retailer 13$8,651 SGD
Retailer 1$8,780 SGD
Retailer 16$8,960 SGD
Retailer 11$9,646 SGD
Retailer 8$10,112 SGD
Retailer 12$13,010 SGD
Retailer 17$13,594 SGD

28 data points across 18 retailers

14 retailers$7,654 SGD to $13,594 SGD

Retailer 1
-
$6,480 SGD
HK$39,600 HKD
Price last confirmed 41 days ago
Retailer 2
-
$7,053 SGD
€5,255 EUR
View
Price last confirmed 41 days ago
B+
Retailer 3
-
$7,654 SGD
$5,987 USD
View
Retailer 4
-
$7,811 SGD
$6,110 USD
View
Price last confirmed 41 days ago
B+
Retailer 5
-
$7,848 SGD
CA$8,526 CAD
View
B+
Retailer 6
-
$8,033 SGD
$6,284 USD
View
B+
Retailer 7
-
$8,275 SGD
A$9,958 AUD
View
B+
Retailer 8
-
$8,651 SGD
$6,767 USD
View
B+
Retailer 9
-
$8,780 SGD
£5,408 GBP
View
B+
Retailer 10
-
$8,960 SGD
$7,009 USD
View
B+
Retailer 11
-
$9,646 SGD
€7,186 EUR
View
B
Retailer 12
-
$13,010 SGD
£8,013 GBP
View
B
Retailer 13
-
$13,594 SGD
$10,634 USD
View
Most Expensive
NZ Jewellers
809800c8-ddf7-4a6e-b10a-11a7a278cb73 · Sep 19
$15,010 SGD
$11,741 USD
View
Price last confirmed 43 days ago
13 more retailers have this diamond
Prices start from $7,654 SGDSave up to $5,940 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.

B+
1.60ct Round
$7,654 SGD