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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

GD • K/SI1 • GIA 6421532753

Certificate GIA 6421532753

Diamond specifications and retailer prices

From $10,210 NZD
As of November 1, 2026
Save $12,550 NZD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,760 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6421532753. Listed at 16 retailers as of November 1, 2026, with prices from $10,210 to $22,760, a $12,550 spread on the same certified stone. NZ Jewellers lists it at $22,760. 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

1.50
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6421532753
Dimensions10.58 × 6.12 × 3.70 mm
L/W Ratio1.73
Top View
10.58 mm6.12 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6421532753
Side View
Table 57.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 60.5%

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: $12,703 NZD|Low: $10,210 NZD|High: $19,193 NZD|Avg: $13,563 NZD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$10,210 NZD
Retailer 8$11,379 NZD
Retailer 9$11,428 NZD
Retailer 7$12,517 NZD
Retailer 1$12,703 NZD
Retailer 2$13,196 NZD
Retailer 3$13,984 NZD
Retailer 4$16,603 NZD
Retailer 5$18,914 NZD

44 data points across 9 retailers

16 retailers$10,210 NZD to $22,760 NZD

B+
Cheapest Retailer
-
$10,210 NZD
B
Retailer 2
-
$10,630 NZD
View
B
Retailer 3
-
$10,751 NZD
View
Retailer 4
-
$11,379 NZD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$11,428 NZD
View
B
Retailer 6
-
$11,475 NZD
View
B
Retailer 7
-
$12,328 NZD
View
B
Retailer 8
-
$12,517 NZD
View
B
Retailer 9
-
$12,703 NZD
View
B
Retailer 10
-
$13,006 NZD
View
B
Retailer 11
-
$13,196 NZD
View
B
Retailer 12
-
$13,984 NZD
View
B
Retailer 13
-
$14,224 NZD
View
C
Retailer 14
-
$16,603 NZD
View
C
Retailer 15
-
$18,914 NZD
View
Most Expensive
C
NZ Jewellers
410d9d39-bdb2-4718-88e0-f9d91a295208 · Nov 5
$22,760 NZD
$12,617 USD
View
15 more retailers have this diamond
Prices start from $10,210 NZDSave up to $12,550 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+
1.50ct Marquise
$10,210 NZD