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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1558302144

Certificate GIA 1558302144

Diamond specifications and retailer prices

From $29,146 CAD
$20,865 USD
As of October 25, 2026
Save $13,847 CAD (32%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $42,994 CAD at Diamonds Direct · As of October 31, 2026
View at Diamonds Direct

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 1558302144. Listed at 13 retailers as of October 25, 2026, with prices from $29,146 to $42,994, a $13,847 spread on the same certified stone. Diamonds Direct lists it at $42,994. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558302144
Dimensions8.60 × 8.64 × 5.41 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.60 mm8.64 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558302144
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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: Oct 25
Current: $42,994 CAD|Low: $28,633 CAD|High: $53,455 CAD|Avg: $35,748 CAD|-4.2%
Diamonds Direct
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
October 31, 2026
Retailer 14$29,146 CAD
Retailer 2$30,668 CAD
Retailer 13$30,797 CAD
Retailer 4$31,433 CAD
Retailer 5$32,411 CAD
Retailer 8$32,671 CAD
Retailer 9$33,615 CAD
Retailer 11$35,451 CAD
Retailer 15$35,914 CAD
Retailer 10$35,973 CAD
Retailer 6$36,424 CAD
Retailer 12$36,557 CAD
Retailer 16$37,102 CAD
Retailer 3$40,488 CAD
Diamonds Direct$42,994 CAD
Retailer 7$52,385 CAD

38 data points across 16 retailers

13 retailers$29,146 CAD to $42,994 CAD

B+
Cheapest Retailer
-
$29,146 CAD
$20,865 USD
B+
Retailer 2
-
$30,668 CAD
$21,954 USD
View
B+
Retailer 3
-
$30,797 CAD
SGD 29,793 SGD
View
Retailer 4
-
$32,671 CAD
$23,388 USD
View
Price last confirmed 26 days ago
B
Retailer 5
-
$33,615 CAD
$24,064 USD
View
B
Retailer 6
-
$35,451 CAD
$25,378 USD
View
B
Retailer 7
-
$35,914 CAD
$25,710 USD
View
B
Retailer 8
-
$35,973 CAD
$25,752 USD
View
B
Retailer 9
-
$36,557 CAD
$26,170 USD
View
B
Retailer 10
-
$37,102 CAD
$26,560 USD
View
B
Retailer 11
-
$38,867 CAD
$27,824 USD
View
B
Retailer 12
-
$40,488 CAD
$28,984 USD
View
Most Expensive
B
Diamonds Direct
1136884 · Oct 31
$42,994 CAD
$30,778 USD
View
12 more retailers have this diamond
Prices start from $29,146 CADSave up to $13,847 CAD

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
$29,146 CAD