Marquise|Natural|GIA

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1445475696

Certificate GIA 1445475696

Diamond specifications and retailer prices

From $4,108 USD
As of November 6, 2026
Save $5,065 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,173 USD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1445475696. Listed at 16 retailers as of November 5, 2026, with prices from $4,108 to $9,173, a $5,065 spread on the same certified stone. NZ Jewellers lists it at $9,173. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1445475696
Dimensions12.03 × 6.11 × 3.49 mm
L/W Ratio1.97
Key to symbols
Feather
Top View
12.03 mm6.11 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1445475696
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,173 USD|Low: $4,070 USD|High: $9,173 USD|Avg: $5,792 USD
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
November 6, 2026
Retailer 10$4,108 USD
Retailer 2$4,359 USD
Retailer 4$4,829 USD
Retailer 12$5,225 USD
Retailer 6$5,321 USD
Retailer 8$5,350 USD
Retailer 11$5,485 USD
Retailer 13$5,485 USD
Retailer 3$5,791 USD
Retailer 7$6,172 USD
Retailer 5$6,328 USD
Retailer 9$8,735 USD
NZ Jewellers$9,173 USD

31 data points across 13 retailers

16 retailers$4,108 USD to $9,173 USD

A
Cheapest Retailer
-
$4,108 USD
A
Retailer 2
-
$4,359 USD
View
B+
Retailer 3
-
$4,829 USD
View
B+
Retailer 4
-
$4,834 USD
View
Retailer 5
-
$5,099 USD
View
Price last confirmed 89 days ago
B+
Retailer 6
-
$5,170 USD
View
Retailer 7
-
$5,225 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$5,321 USD
View
B+
Retailer 9
-
$5,350 USD
View
B+
Retailer 10
-
$5,485 USD
View
B+
Retailer 11
-
$5,485 USD
View
B+
Retailer 12
-
$5,791 USD
View
B
Retailer 13
-
$6,172 USD
View
B
Retailer 14
-
$6,328 USD
View
B
Retailer 15
-
$8,735 USD
View
Most Expensive
B
NZ Jewellers
65f84ebf-99d5-4b50-bf6a-d5555edcd2fd · Nov 5
$9,173 USD
View
15 more retailers have this diamond
Prices start from $4,108 USDSave up to $5,065 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.

A
1.51ct Marquise
$4,108 USD