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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 1437394970

Certificate GIA 1437394970

Diamond specifications and retailer prices

From $531 SGD
$415 USD
As of October 31, 2026
Save $595 SGD (53%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,126 SGD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1437394970. Listed at 5 retailers as of October 31, 2026, with prices from $531 to $1,126, a $595 spread on the same certified stone. 77 Diamonds lists it at $1,126. 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

0.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1437394970
Dimensions7.45 × 4.19 × 2.60 mm
L/W Ratio1.78
Girdle conditionFaceted
Key to symbols
Feather, Twinning Wisp
Top View
7.45 mm4.19 mm0.50 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1437394970
Side View
Table 65.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 61.9%

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: Oct 31
Current: $1,126 SGD|Low: $482 SGD|High: $1,152 SGD|Avg: $897 SGD|+1.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$531 SGD
Retailer 3$789 SGD
77 Diamonds$1,126 SGD
Retailer 4$1,152 SGD

30 data points across 4 retailers

5 retailers$531 SGD to $1,126 SGD

A
Cheapest Retailer
-
$531 SGD
$415 USD
Final sale: no returns
B+
Retailer 2
-
$723 SGD
$565 USD
View
B+
Retailer 3
-
$789 SGD
$617 USD
View
B
Retailer 4
-
$911 SGD
$713 USD
View
Most Expensive
B
77 Diamonds
MQMBMNHYFSDE · Nov 2
$1,126 SGD
£693 GBP
View
4 more retailers have this diamond
Prices start from $531 SGDSave up to $595 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
0.50ct Marquise
$531 SGD