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Cushion|Natural|GIA

0.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1549165866

Certificate GIA 1549165866

Diamond specifications and retailer prices

From $361 SGD
₹26,866 INR
As of November 2, 2026
Save $781 SGD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,142 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter 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 1549165866. Listed at 8 retailers as of November 2, 2026, with prices from $361 to $1,142, a $781 spread on the same certified stone. MOH London lists it at $1,142. 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

0.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1549165866
Dimensions4.63 × 4.51 × 3.00 mm
L/W Ratio1.03
Girdle conditionFaceted
Key to symbols
Feather, Crystal
Top View
4.63 mm4.51 mm0.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1549165866
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 66.6%

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: $1,142 SGD|Low: $360 SGD|High: $1,156 SGD|Avg: $759 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$361 SGD
Retailer 3$645 SGD
Retailer 5$763 SGD
Retailer 6$767 SGD
Retailer 7$792 SGD
Retailer 4$901 SGD
MOH London$1,142 SGD

36 data points across 7 retailers

8 retailers$361 SGD to $1,142 SGD

A
Cheapest Retailer
-
$361 SGD
₹26,866 INR
B+
Retailer 2
-
$544 SGD
$425 USD
View
B+
Retailer 3
-
$645 SGD
£397 GBP
View
B+
Retailer 4
-
$763 SGD
ZAR 9,644 ZAR
View
B
Retailer 5
-
$767 SGD
$600 USD
View
Retailer 6
-
$792 SGD
A$953 AUD
View
Price last confirmed 29 days ago
B
Retailer 7
-
$901 SGD
€671 EUR
View
Most Expensive
B
MOH London
BED87C1C3 · Nov 2
$1,142 SGD
£703 GBP
View
7 more retailers have this diamond
Prices start from $361 SGDSave up to $781 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.

A
0.51ct Cushion
$361 SGD