Cushion|Natural|GIA

0.40ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 2557639663

Certificate GIA 2557639663

Diamond specifications and retailer prices

From $551 USD
As of October 29, 2026
Save $603 USD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,154 USD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded G 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 2557639663. Listed at 14 retailers as of October 29, 2026, with prices from $551 to $1,154, a $603 spread on the same certified stone. MOH London lists it at $1,154. 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

0.40
Carat
G
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557639663
Dimensions4.90 × 3.77 × 2.63 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud
Top View
4.90 mm3.77 mm0.40 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557639663
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $1,154 USD|Low: $442 USD|High: $1,167 USD|Avg: $697 USD|+20.6%
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 1, 2026
Retailer 12$515 USD
Retailer 11$551 USD
Retailer 4$590 USD
Retailer 8$590 USD
Retailer 6$628 USD
Retailer 3$643 USD
Retailer 5$657 USD
Retailer 13$682 USD
Retailer 10$701 USD
Retailer 7$765 USD
Retailer 9$793 USD
Retailer 2$1,012 USD
MOH London$1,154 USD

35 data points across 13 retailers

14 retailers$551 USD to $1,154 USD

Retailer 1
-
$430 USD
SGD 581 SGD
Price last confirmed 24 days ago
Retailer 2
-
$515 USD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$551 USD
View
B+
Retailer 4
-
$590 USD
View
B+
Retailer 5
-
$590 USD
View
B+
Retailer 6
-
$628 USD
£495 GBP
View
B+
Retailer 7
-
$643 USD
View
Retailer 8
-
$657 USD
A$1,010 AUD
View
Price last confirmed 28 days ago
B
Retailer 9
-
$682 USD
View
B
Retailer 10
-
$701 USD
£552 GBP
View
B
Retailer 11
-
$765 USD
€729 EUR
View
B
Retailer 12
-
$793 USD
ZAR 12,815 ZAR
View
C
Retailer 13
-
$1,012 USD
£797 GBP
View
Most Expensive
C
MOH London
97C107CE1 · Nov 1
$1,154 USD
£909 GBP
View
13 more retailers have this diamond
Prices start from $551 USDSave up to $603 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.

B+
0.40ct Cushion
$551 USD