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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 6321443750

Certificate GIA 6321443750

Diamond specifications and retailer prices

From $458 SGD
HK$2,800 HKD
As of November 1, 2026
Save $807 SGD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,265 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6321443750. Listed at 16 retailers as of November 1, 2026, with prices from $458 to $1,265, a $807 spread on the same certified stone. MOH London lists it at $1,265. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6321443750
Dimensions6.53 × 3.83 × 2.70 mm
L/W Ratio1.70
Top View
6.53 mm3.83 mm0.40 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6321443750
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 70.5%

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: Nov 1
Current: $1,265 SGD|Low: $458 SGD|High: $2,099 SGD|Avg: $811 SGD|-0.9%
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
Retailer 16
November 2, 2026
Retailer 6$458 SGD
Retailer 5$486 SGD
Retailer 14$547 SGD
Retailer 12$590 SGD
Retailer 13$590 SGD
Retailer 7$600 SGD
Retailer 16$632 SGD
Retailer 9$679 SGD
Retailer 8$715 SGD
Retailer 3$742 SGD
Retailer 4$818 SGD
Retailer 10$834 SGD
Retailer 11$849 SGD
Retailer 2$1,108 SGD
MOH London$1,265 SGD
Retailer 15$2,099 SGD

26 data points across 16 retailers

16 retailers$458 SGD to $1,265 SGD

B+
Cheapest Retailer
-
$458 SGD
HK$2,800 HKD
B+
Retailer 2
-
$486 SGD
$380 USD
View
B
Retailer 3
-
$547 SGD
$428 USD
View
B
Retailer 4
-
$574 SGD
View
B
Retailer 5
-
$590 SGD
$461 USD
View
B
Retailer 6
-
$590 SGD
$461 USD
View
B
Retailer 7
-
$632 SGD
$494 USD
View
B
Retailer 8
-
$679 SGD
£418 GBP
View
B
Retailer 9
-
$715 SGD
$559 USD
View
B
Retailer 10
-
$742 SGD
$580 USD
View
C
Retailer 11
-
$818 SGD
$640 USD
View
C
Retailer 12
-
$834 SGD
€621 EUR
View
C
Retailer 13
-
$849 SGD
ZAR 10,725 ZAR
View
C
Retailer 14
-
$1,108 SGD
£682 GBP
View
Most Expensive
C
MOH London
86C62FB86 · Nov 2
$1,265 SGD
£779 GBP
View
14 more retailers have this diamond
Prices start from $458 SGDSave up to $807 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+
0.40ct Marquise
$458 SGD