Round|Natural|GIA

2.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6551701522

Certificate GIA 6551701522

Diamond specifications and retailer prices

From $16,749 USD
As of October 28, 2026
Save $11,856 USD (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $28,605 USD at MOH London · As of October 29, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551701522. Listed at 15 retailers as of October 28, 2026, with prices from $16,749 to $28,605, a $11,856 spread on the same certified stone. MOH London lists it at $28,605. 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

2.50
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551701522
Dimensions8.55 × 8.63 × 5.38 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.55 mm8.63 mm2.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551701522
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.6%

Caratlytics Score

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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 28
Current: $28,605 USD|Low: $16,749 USD|High: $28,796 USD|Avg: $21,233 USD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 6$16,749 USD
Retailer 3$18,068 USD
Retailer 2$18,764 USD
Retailer 5$21,260 USD
Retailer 4$22,538 USD
MOH London$28,605 USD

33 data points across 6 retailers

15 retailers$16,749 USD to $28,605 USD

A
Cheapest Retailer
-
$16,749 USD
A
Retailer 2
-
$17,206 USD
View
A
Retailer 3
-
$18,068 USD
₹1,720,747 INR
View
A
Retailer 4
-
$18,764 USD
£14,775 GBP
View
B+
Retailer 5
-
$19,130 USD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$19,463 USD
View
B+
Retailer 7
-
$19,737 USD
View
Price last confirmed 28 days ago
B+
Retailer 8
-
$20,060 USD
View
B+
Retailer 9
-
$20,060 USD
View
B+
Retailer 10
-
$20,496 USD
View
Price last confirmed 30 days ago
B+
Retailer 11
-
$20,730 USD
View
B+
Retailer 12
-
$21,260 USD
€20,248 EUR
View
B+
Retailer 13
-
$22,538 USD
£17,746 GBP
View
B
Retailer 14
-
$25,810 USD
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
32F9B49D0 · Oct 29
$28,605 USD
£22,524 GBP
View
14 more retailers have this diamond
Prices start from $16,749 USDSave up to $11,856 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
2.50ct Round
$16,749 USD