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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

GD • D/SI1 • GIA 7511675994

Certificate GIA 7511675994

Diamond specifications and retailer prices

From $697 AUD
As of November 6, 2026
Save $1,436 AUD (67%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,133 AUD 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7511675994. Listed at 14 retailers as of November 2, 2026, with prices from $697 to $2,133, a $1,436 spread on the same certified stone. MOH London lists it at $2,133. 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7511675994
Dimensions5.73 × 4.07 × 2.93 mm
L/W Ratio1.41
Key to symbols
Crystal, Cloud
Top View
5.73 mm4.07 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7511675994
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.9%

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 6
Current: $2,133 AUD|Low: $697 AUD|High: $2,220 AUD|Avg: $1,232 AUD|-3.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2$697 AUD
Retailer 5$800 AUD
Retailer 13$988 AUD
Retailer 10$994 AUD
Retailer 9$1,115 AUD
Retailer 7$1,125 AUD
Retailer 12$1,157 AUD
Retailer 11$1,193 AUD
Retailer 3$1,322 AUD
Retailer 4$1,329 AUD
Retailer 6$1,351 AUD
Retailer 8$1,425 AUD
MOH London$2,133 AUD

31 data points across 13 retailers

14 retailers$697 AUD to $2,133 AUD

A
Cheapest Retailer
-
$697 AUD
B+
Retailer 2
-
$800 AUD
View
Retailer 3
-
$988 AUD
View
Price last confirmed 11 days ago
Retailer 4
-
$994 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$1,115 AUD
View
B
Retailer 6
-
$1,125 AUD
View
B
Retailer 7
-
$1,157 AUD
View
B+
Retailer 8
-
$1,193 AUD
View
B
Retailer 9
-
$1,322 AUD
View
Retailer 10
-
$1,329 AUD
View
Price last confirmed 17 days ago
B
Retailer 11
-
$1,351 AUD
View
B
Retailer 12
-
$1,425 AUD
View
Retailer 13
-
$1,428 AUD
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
DE2A94A13 · Nov 2
$2,133 AUD
£1,154 GBP
View
13 more retailers have this diamond
Prices start from $697 AUDSave up to $1,436 AUD

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
$697 AUD