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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 $22,704 NZD
$12,796 USD
As of November 1, 2026
Save $14,248 NZD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $36,952 NZD 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 $22,704 to $36,952, a $14,248 spread on the same certified stone. NZ Jewellers lists it at $36,952. 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: Nov 1
Current: $27,925 NZD|Low: $18,706 NZD|High: $35,042 NZD|Avg: $25,497 NZD|+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
November 2, 2026
Retailer 8$18,706 NZD
Retailer 6$22,693 NZD
Retailer 15$22,704 NZD
Retailer 9$23,250 NZD
Retailer 14$23,451 NZD
Retailer 4$23,664 NZD
Retailer 13$23,796 NZD
Retailer 7$24,019 NZD
Retailer 16$24,033 NZD
Retailer 3$24,473 NZD
Retailer 11$24,806 NZD
Retailer 17$26,104 NZD
Retailer 5$26,858 NZD
Retailer 2$27,532 NZD
Retailer 1$27,925 NZD
Retailer 12$32,572 NZD
Retailer 10$34,625 NZD

40 data points across 17 retailers

13 retailers$22,704 NZD to $36,952 NZD

B+
Cheapest Retailer
-
$22,704 NZD
$12,796 USD
B
Retailer 2
-
$23,451 NZD
$13,217 USD
View
Final sale: no returns
B+
Retailer 3
-
$23,664 NZD
$13,337 USD
View
Retailer 4
-
$23,796 NZD
A$20,633 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$24,033 NZD
$13,545 USD
View
B+
Retailer 6
-
$24,806 NZD
£11,008 GBP
View
B+
Retailer 7
-
$26,104 NZD
$14,712 USD
View
B
Retailer 8
-
$26,512 NZD
$14,942 USD
View
B
Retailer 9
-
$27,532 NZD
$15,517 USD
View
B
Retailer 10
-
$27,925 NZD
€14,989 EUR
View
B
Retailer 11
-
$32,572 NZD
ZAR 296,569 ZAR
View
B
Retailer 12
-
$34,625 NZD
£15,366 GBP
View
Most Expensive
B
NZ Jewellers
c4c34995-0942-4c95-a076-5438e9cfa13b · Oct 30
$36,952 NZD
$20,826 USD
View
12 more retailers have this diamond
Prices start from $22,704 NZDSave up to $14,248 NZD

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
$22,704 NZD