Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

GD • K/SI1 • GIA 6421532753

Certificate GIA 6421532753

Diamond specifications and retailer prices

From $5,660 USD
As of November 1, 2026
Save $6,957 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,617 USD 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 $5,660 to $12,617, a $6,957 spread on the same certified stone. NZ Jewellers lists it at $12,617. 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
Color
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: $7,315 USD|Low: $5,660 USD|High: $10,640 USD|Avg: $7,525 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$5,660 USD
Retailer 8$6,308 USD
Retailer 9$6,335 USD
Retailer 7$6,939 USD
Retailer 3$7,042 USD
Retailer 1$7,315 USD
Retailer 2$7,752 USD
Retailer 4$9,204 USD
Retailer 5$10,485 USD

44 data points across 9 retailers

16 retailers$5,660 USD to $12,617 USD

B+
Cheapest Retailer
-
$5,660 USD
B
Retailer 2
-
$5,893 USD
View
B
Retailer 3
-
$5,960 USD
View
Retailer 4
-
$6,308 USD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$6,335 USD
View
B
Retailer 6
-
$6,361 USD
View
B
Retailer 7
-
$6,834 USD
View
B
Retailer 8
-
$6,939 USD
View
B
Retailer 9
-
$7,042 USD
View
B
Retailer 10
-
$7,210 USD
View
B
Retailer 11
-
$7,315 USD
View
B
Retailer 12
-
$7,752 USD
View
B
Retailer 13
-
$7,885 USD
View
C
Retailer 14
-
$9,204 USD
View
C
Retailer 15
-
$10,485 USD
View
Most Expensive
C
NZ Jewellers
410d9d39-bdb2-4718-88e0-f9d91a295208 · Nov 5
$12,617 USD
View
15 more retailers have this diamond
Prices start from $5,660 USDSave up to $6,957 USD

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
$5,660 USD