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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 1558829621

Certificate GIA 1558829621

Diamond specifications and retailer prices

From $11,638 SGD
As of November 6, 2026
Save $8,455 SGD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $20,093 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two 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 1558829621. Listed at 13 retailers as of November 4, 2026, with prices from $11,638 to $20,093, a $8,455 spread on the same certified stone. MOH London lists it at $20,093. 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

1.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558829621
Dimensions11.17 × 5.88 × 3.79 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Pinpoint
Top View
11.17 mm5.88 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558829621
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.4%

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 6
Current: $20,093 SGD|Low: $10,414 SGD|High: $20,362 SGD|Avg: $13,968 SGD|-1.2%
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 6, 2026
Retailer 8$10,414 SGD
Retailer 5$11,638 SGD
Retailer 6$11,704 SGD
Retailer 11$12,442 SGD
Retailer 7$12,483 SGD
Retailer 4$12,588 SGD
Retailer 12$13,485 SGD
Retailer 10$13,932 SGD
Retailer 2$14,522 SGD
Retailer 15$15,041 SGD
Retailer 14$15,251 SGD
Retailer 16$15,251 SGD
Retailer 9$15,591 SGD
Retailer 3$15,764 SGD
Retailer 13$15,860 SGD
MOH London$20,093 SGD

9 data points across 16 retailers

13 retailers$11,638 SGD to $20,093 SGD

B+
Cheapest Retailer
-
$11,638 SGD
B+
Retailer 2
-
$12,442 SGD
View
B+
Retailer 3
-
$12,588 SGD
View
B
Retailer 4
-
$13,485 SGD
View
B+
Retailer 5
-
$13,932 SGD
View
B
Retailer 6
-
$14,522 SGD
View
B
Retailer 7
-
$15,041 SGD
View
B
Retailer 8
-
$15,251 SGD
View
B
Retailer 9
-
$15,251 SGD
View
B
Retailer 10
-
$15,591 SGD
View
B
Retailer 11
-
$15,764 SGD
View
B
Retailer 12
-
$15,860 SGD
View
Most Expensive
B
MOH London
941042344 · Nov 4
$20,093 SGD
£12,345 GBP
View
12 more retailers have this diamond
Prices start from $11,638 SGDSave up to $8,455 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+
1.51ct Marquise
$11,638 SGD