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Cushion|Natural|GIA

0.51ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 1555383416

Certificate GIA 1555383416

Diamond specifications and retailer prices

From $808 NZD
As of November 7, 2026
Save $1,320 NZD (62%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,128 NZD at MOH London · As of November 7, 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555383416. Listed at 21 retailers as of November 7, 2026, with prices from $808 to $2,128, a $1,320 spread on the same certified stone. MOH London lists it at $2,128. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555383416
Dimensions5.31 × 4.24 × 2.92 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
5.31 mm4.24 mm0.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555383416
Side View
Table 69.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.8%

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 7
Current: $2,128 NZD|Low: $855 NZD|High: $2,197 NZD|Avg: $1,298 NZD|-3.1%
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
Retailer 14
Retailer 15
November 7, 2026
Retailer 7$855 NZD
Retailer 14$985 NZD
Retailer 12$1,005 NZD
Retailer 8$1,079 NZD
Retailer 11$1,086 NZD
Retailer 10$1,138 NZD
Retailer 13$1,149 NZD
Retailer 5$1,160 NZD
Retailer 2$1,288 NZD
Retailer 6$1,290 NZD
Retailer 9$1,335 NZD
Retailer 3$1,375 NZD
Retailer 4$1,412 NZD
Retailer 15$1,436 NZD
MOH London$2,128 NZD

26 data points across 15 retailers

21 retailers$808 NZD to $2,128 NZD

A
Cheapest Retailer
-
$808 NZD
A
Retailer 2
-
$855 NZD
View
Final sale: no returns
A
Retailer 3
-
$967 NZD
View
A
Retailer 4
-
$985 NZD
View
A
Retailer 5
-
$1,005 NZD
View
B+
Retailer 6
-
$1,017 NZD
View
B+
Retailer 7
-
$1,079 NZD
View
B+
Retailer 8
-
$1,086 NZD
View
B+
Retailer 9
-
$1,138 NZD
View
B+
Retailer 10
-
$1,149 NZD
View
Retailer 11
-
$1,160 NZD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$1,288 NZD
View
B+
Retailer 13
-
$1,290 NZD
View
B+
Retailer 14
-
$1,335 NZD
View
B+
Retailer 15
-
$1,338 NZD
View
B
Retailer 16
-
$1,367 NZD
View
B+
Retailer 17
-
$1,375 NZD
View
B
Retailer 18
-
$1,412 NZD
View
Retailer 19
-
$1,412 NZD
View
Price last confirmed 35 days ago
B+
Retailer 20
-
$1,436 NZD
View
Most Expensive
B
MOH London
99DB9A894 · Nov 7
$2,128 NZD
£929 GBP
View
20 more retailers have this diamond
Prices start from $808 NZDSave up to $1,320 NZD

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
$808 NZD