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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 6555854230

Certificate GIA 6555854230

Diamond specifications and retailer prices

From $8,754 SGD
$6,845 USD
As of November 1, 2026
Save $10,386 SGD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $19,140 SGD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded I 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 6555854230. Listed at 18 retailers as of November 1, 2026, with prices from $8,754 to $19,140, a $10,386 spread on the same certified stone. NZ Jewellers lists it at $19,140. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555854230
Dimensions10.71 × 5.96 × 3.96 mm
L/W Ratio1.80
Culet sizeNone
Top View
10.71 mm5.96 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555854230
Side View
Table 55.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.5%

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: $19,140 SGD|Low: $8,473 SGD|High: $19,140 SGD|Avg: $11,543 SGD
NZ Jewellers
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
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 14$8,754 SGD
Retailer 3$8,960 SGD
Retailer 9$9,071 SGD
Retailer 7$9,547 SGD
Retailer 4$9,569 SGD
Retailer 17$9,570 SGD
Retailer 10$10,195 SGD
Retailer 19$10,367 SGD
Retailer 5$10,527 SGD
Retailer 2$10,670 SGD
Retailer 12$10,858 SGD
Retailer 8$10,871 SGD
Retailer 6$11,300 SGD
Retailer 18$11,962 SGD
Retailer 13$12,501 SGD
Retailer 11$12,601 SGD
Retailer 16$14,059 SGD
Retailer 15$15,948 SGD
NZ Jewellers$19,140 SGD

17 data points across 19 retailers

18 retailers$8,754 SGD to $19,140 SGD

B+
Cheapest Retailer
-
$8,754 SGD
$6,845 USD
B+
Retailer 2
-
$8,960 SGD
$7,006 USD
View
B+
Retailer 3
-
$9,071 SGD
$7,093 USD
View
B+
Retailer 4
-
$9,547 SGD
$7,465 USD
View
B+
Retailer 5
-
$9,569 SGD
$7,482 USD
View
Final sale: no returns
B+
Retailer 6
-
$9,570 SGD
$7,483 USD
View
B
Retailer 7
-
$10,195 SGD
$7,972 USD
View
B
Retailer 8
-
$10,367 SGD
$8,106 USD
View
B
Retailer 9
-
$10,527 SGD
$8,231 USD
View
B
Retailer 10
-
$10,670 SGD
£6,569 GBP
View
B
Retailer 11
-
$10,858 SGD
£6,685 GBP
View
Retailer 12
-
$10,871 SGD
A$13,078 AUD
View
Price last confirmed 34 days ago
B
Retailer 13
-
$11,300 SGD
$8,836 USD
View
B
Retailer 14
-
$11,962 SGD
$9,353 USD
View
B
Retailer 15
-
$12,501 SGD
€9,309 EUR
View
B
Retailer 16
-
$14,059 SGD
ZAR 177,588 ZAR
View
B
Retailer 17
-
$15,948 SGD
£9,819 GBP
View
Most Expensive
C
NZ Jewellers
3e8021c5-b628-48f2-a70b-ff429de73b5f · Nov 3
$19,140 SGD
$14,966 USD
View
17 more retailers have this diamond
Prices start from $8,754 SGDSave up to $10,386 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
$8,754 SGD