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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7553135928

Certificate GIA 7553135928

Diamond specifications and retailer prices

From $1,249 SGD
$977 USD
As of November 1, 2026
Save $926 SGD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,581 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H 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 7553135928. Listed at 13 retailers as of October 31, 2026, with a 74% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.78°
Pavilion angle42.14°
OriginNatural
Grading LabGIA
CertificateGIA 7553135928
Dimensions8.31 × 4.00 × 2.66 mm
L/W Ratio2.08
Girdle conditionVery Thick
Key to symbols
Feather
Top View
8.31 mm4.00 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553135928
Side View
Table 60.0%Crown 38.78°GirdlePavilion 42.14°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,581 SGD|Low: $1,276 SGD|High: $3,438 SGD|Avg: $1,896 SGD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$1,276 SGD
Retailer 10$1,276 SGD
Retailer 6$1,326 SGD
Retailer 9$1,473 SGD
Retailer 2$1,593 SGD
Retailer 5$1,843 SGD
Retailer 3$1,975 SGD
Retailer 4$2,176 SGD
MOH London$2,581 SGD
Retailer 7$3,438 SGD

44 data points across 10 retailers

13 retailers$1,249 SGD to $2,176 SGD

B
Cheapest Retailer
-
$1,249 SGD
$977 USD
B
Retailer 2
-
$1,264 SGD
$988 USD
View
B
Retailer 3
-
$1,276 SGD
$998 USD
View
B
Retailer 4
-
$1,276 SGD
$998 USD
View
B
Retailer 5
-
$1,326 SGD
$1,037 USD
View
B
Retailer 6
-
$1,401 SGD
$1,095 USD
View
B
Retailer 7
-
$1,473 SGD
$1,152 USD
View
B
Retailer 8
-
$1,593 SGD
£981 GBP
View
Retailer 9
-
$1,843 SGD
A$2,217 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$1,975 SGD
€1,471 EUR
View
B
Retailer 11
-
$2,176 SGD
ZAR 27,482 ZAR
View
Most Expensive
MOH London
CF7004367 · Nov 2
$2,581 SGD
£1,589 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $1,249 SGDSave up to $926 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
0.51ct Marquise
$1,249 SGD