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Marquise|Natural|GIA

2.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6565739246

Certificate GIA 6565739246

Diamond specifications and retailer prices

From $19,318 USD
SGD 26,106 SGD
As of November 2, 2026
Save $6,817 USD (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $26,135 USD at Ritani · As of November 1, 2026
View at Ritani

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6565739246. Listed at 8 retailers as of November 1, 2026, with prices from $19,318 to $26,135, a $6,817 spread on the same certified stone. Ritani lists it at $26,135. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565739246
Dimensions12.85 × 6.95 × 4.52 mm
L/W Ratio1.85
Top View
12.85 mm6.95 mm2.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565739246
Side View
Table 57.0%CrownGirdle: THN-VTKPavilionCulet: NDepth 65.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $20,953 USD|Low: $19,318 USD|High: $26,135 USD|Avg: $22,194 USD|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Ritani
November 2, 2026
Retailer 7$19,318 USD
Retailer 4$20,830 USD
Retailer 1$20,953 USD
Retailer 2$21,085 USD
Retailer 3$21,093 USD
Retailer 5$22,046 USD
Retailer 6$24,826 USD
Ritani$26,135 USD

5 data points across 8 retailers

8 retailers$19,318 USD to $26,135 USD

A
Cheapest Retailer
-
$19,318 USD
SGD 26,106 SGD
B+
Retailer 2
-
$20,830 USD
View
A
Retailer 3
-
$20,953 USD
£16,499 GBP
View
B+
Retailer 4
-
$21,085 USD
View
B+
Retailer 5
-
$21,093 USD
View
B+
Retailer 6
-
$22,046 USD
View
B+
Retailer 7
-
$24,826 USD
View
Most Expensive
B
Ritani
D-1AFRL2R2EM · Nov 1
$26,135 USD
View
7 more retailers have this diamond
Prices start from $19,318 USDSave up to $6,817 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
2.51ct Marquise
$19,318 USD