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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1558211257

Certificate GIA 1558211257

Diamond specifications and retailer prices

From $16,358 SGD
$12,796 USD
As of October 30, 2026
Save $10,266 SGD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $26,624 SGD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558211257. Listed at 13 retailers as of October 30, 2026, with prices from $16,358 to $26,624, a $10,266 spread on the same certified stone. NZ Jewellers lists it at $26,624. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558211257
Dimensions11.60 × 5.94 × 3.77 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Knot, Natural
Top View
11.60 mm5.94 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558211257
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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: Oct 30
Current: $20,127 SGD|Low: $13,478 SGD|High: $25,248 SGD|Avg: $18,376 SGD|+2.3%
Retailer 1
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
October 31, 2026
Retailer 8$13,478 SGD
Retailer 6$16,351 SGD
Retailer 15$16,358 SGD
Retailer 9$16,752 SGD
Retailer 14$16,897 SGD
Retailer 4$17,050 SGD
Retailer 13$17,145 SGD
Retailer 7$17,306 SGD
Retailer 16$17,316 SGD
Retailer 3$17,633 SGD
Retailer 10$17,926 SGD
Retailer 17$18,808 SGD
Retailer 5$19,351 SGD
Retailer 2$19,837 SGD
Retailer 1$20,127 SGD
Retailer 12$23,344 SGD
Retailer 11$25,081 SGD

38 data points across 17 retailers

13 retailers$16,358 SGD to $26,624 SGD

B+
Cheapest Retailer
-
$16,358 SGD
$12,796 USD
B
Retailer 2
-
$16,897 SGD
$13,217 USD
View
Final sale: no returns
B+
Retailer 3
-
$17,050 SGD
$13,337 USD
View
Retailer 4
-
$17,145 SGD
A$20,633 AUD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$17,316 SGD
$13,545 USD
View
B+
Retailer 6
-
$17,926 SGD
£11,041 GBP
View
B+
Retailer 7
-
$18,808 SGD
$14,712 USD
View
B
Retailer 8
-
$19,102 SGD
$14,942 USD
View
B
Retailer 9
-
$19,837 SGD
$15,517 USD
View
B
Retailer 10
-
$20,127 SGD
€14,994 EUR
View
B
Retailer 11
-
$23,344 SGD
ZAR 294,993 ZAR
View
B
Retailer 12
-
$25,081 SGD
£15,448 GBP
View
Most Expensive
B
NZ Jewellers
c4c34995-0942-4c95-a076-5438e9cfa13b · Oct 30
$26,624 SGD
$20,826 USD
View
12 more retailers have this diamond
Prices start from $16,358 SGDSave up to $10,266 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
$16,358 SGD