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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1549103009

Certificate GIA 1549103009

Diamond specifications and retailer prices

From $31,455 SGD
$24,605 USD
As of November 1, 2026
Save $18,679 SGD (37%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $50,134 SGD at Cape Diamonds · As of October 27, 2026
View at Cape Diamonds

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1549103009. Listed at 13 retailers as of October 27, 2026, with prices from $31,455 to $50,134, a $18,679 spread on the same certified stone. Cape Diamonds lists it at $50,134. 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

2.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1549103009
Dimensions8.94 × 8.88 × 5.21 mm
L/W Ratio1.01
Girdle conditionMedium
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
8.94 mm8.88 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549103009
Side View
Table 61.0%Crown 32.5°Girdle: MediumPavilion 41°Culet: NoneDepth 58.4%

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: $50,134 SGD|Low: $31,455 SGD|High: $55,409 SGD|Avg: $39,257 SGD|+1.4%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 11$31,455 SGD
Retailer 12$31,800 SGD
Retailer 6$33,802 SGD
Retailer 8$33,831 SGD
Retailer 4$34,427 SGD
Retailer 9$36,709 SGD
Retailer 5$36,907 SGD
Retailer 10$37,135 SGD
Retailer 2$39,683 SGD
Retailer 3$42,369 SGD
Retailer 7$42,570 SGD
Cape Diamonds$50,134 SGD
Retailer 13$55,336 SGD

37 data points across 13 retailers

13 retailers$31,455 SGD to $50,134 SGD

B+
Cheapest Retailer
-
$31,455 SGD
$24,605 USD
B+
Retailer 2
-
$31,800 SGD
$24,875 USD
View
B+
Retailer 3
-
$33,802 SGD
₹2,518,184 INR
View
B
Retailer 4
-
$33,831 SGD
$26,463 USD
View
B+
Retailer 5
-
$34,607 SGD
A$41,646 AUD
View
B
Retailer 6
-
$36,709 SGD
$28,715 USD
View
Retailer 7
-
$36,709 SGD
$28,715 USD
View
Price last confirmed 11 days ago
Retailer 8
-
$36,907 SGD
$28,870 USD
View
Price last confirmed 43 days ago
B
Retailer 9
-
$37,135 SGD
$29,048 USD
View
B
Retailer 10
-
$39,683 SGD
£24,442 GBP
View
Retailer 11
-
$42,369 SGD
$33,142 USD
View
Price last confirmed 39 days ago
B
Retailer 12
-
$42,570 SGD
€31,714 EUR
View
Most Expensive
B
Cape Diamonds
cert_1549103009 · Oct 27
$50,134 SGD
ZAR 633,536 ZAR
View
12 more retailers have this diamond
Prices start from $31,455 SGDSave up to $18,679 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+
2.51ct Round
$31,455 SGD