Marquise|Natural|GIA

2.51ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 1553744455

Certificate GIA 1553744455

Diamond specifications and retailer prices

From $26,680 SGD
$20,870 USD
As of October 26, 2026
Save $18,707 SGD (41%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $45,387 SGD at MOH London · As of October 26, 2026
View at MOH London

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1553744455. Listed at 25 retailers as of October 26, 2026, with prices from $26,680 to $45,387, a $18,707 spread on the same certified stone. MOH London lists it at $45,387. 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
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.16°
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 1553744455
Dimensions12.40 × 6.80 × 4.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
12.40 mm6.80 mm2.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553744455
Side View
Table 58.0%Crown 43.16°Girdle: STK-VTKPavilion 39.4°Culet: NoneDepth 67.8%

Caratlytics Score

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

Price History

Last verified: Oct 26
Current: $45,387 SGD|Low: $23,344 SGD|High: $45,872 SGD|Avg: $30,431 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$26,680 SGD
Retailer 8$27,111 SGD
Retailer 2$27,436 SGD
Retailer 7$27,813 SGD
Retailer 5$28,012 SGD
Retailer 3$29,311 SGD
Retailer 4$33,804 SGD
Retailer 6$34,922 SGD
MOH London$45,387 SGD

46 data points across 9 retailers

25 retailers$26,680 SGD to $45,387 SGD

B+
Cheapest Retailer
-
$26,680 SGD
$20,870 USD
Retailer 2
-
$26,892 SGD
$21,036 USD
View
Price last confirmed 9 days ago
Retailer 3
-
$27,111 SGD
$21,207 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
$27,436 SGD
₹2,043,951 INR
View
B+
Retailer 5
-
$27,505 SGD
A$33,101 AUD
View
B+
Retailer 6
-
$28,012 SGD
$21,912 USD
View
Retailer 7
-
$29,022 SGD
$22,702 USD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$29,311 SGD
£18,054 GBP
View
Retailer 9
-
$29,431 SGD
$23,022 USD
View
Price last confirmed 7 days ago
Retailer 10
-
$30,473 SGD
$23,837 USD
View
Price last confirmed 32 days ago
Retailer 11
-
$31,016 SGD
$24,262 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$31,167 SGD
$24,380 USD
View
Price last confirmed 7 days ago
Retailer 13
-
$31,167 SGD
$24,380 USD
View
Price last confirmed 7 days ago
Retailer 14
-
$31,441 SGD
$24,594 USD
View
Price last confirmed 25 days ago
Retailer 15
-
$31,441 SGD
$24,594 USD
View
Price last confirmed 38 days ago
B+
Retailer 16
-
$31,783 SGD
A$38,248 AUD
View
Retailer 17
-
$32,203 SGD
$25,190 USD
View
Price last confirmed 7 days ago
Retailer 18
-
$32,650 SGD
$25,540 USD
View
Price last confirmed 56 days ago
Retailer 19
-
$32,650 SGD
$25,540 USD
View
Price last confirmed 34 days ago
Retailer 20
-
$33,086 SGD
$25,881 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
$33,804 SGD
€25,183 EUR
View
Retailer 22
-
$34,922 SGD
$27,317 USD
View
Price last confirmed 9 days ago
Retailer 23
-
$41,115 SGD
$32,161 USD
View
Price last confirmed 38 days ago
Retailer 24
-
$41,115 SGD
$32,161 USD
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
3DD4EB45D · Oct 26
$45,387 SGD
£27,955 GBP
View
24 more retailers have this diamond
Prices start from $26,680 SGDSave up to $18,707 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 Marquise
$26,680 SGD