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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6562577541

Certificate GIA 6562577541

Diamond specifications and retailer prices

From $12,365 AUD
HK$67,700 HKD
As of November 1, 2026
Save $10,691 AUD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $23,056 AUD 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562577541. Listed at 11 retailers as of October 30, 2026, with prices from $12,365 to $23,056, a $10,691 spread on the same certified stone. NZ Jewellers lists it at $23,056. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6562577541
Dimensions10.91 × 5.91 × 3.75 mm
L/W Ratio1.85
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Needle
Top View
10.91 mm5.91 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6562577541
Side View
Table 61.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.4%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $23,056 AUD|Low: $12,365 AUD|High: $23,644 AUD|Avg: $16,385 AUD|-2.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11$12,365 AUD
Retailer 4$12,707 AUD
Retailer 9$13,099 AUD
Retailer 3$13,453 AUD
Retailer 10$14,599 AUD
Retailer 5$15,586 AUD
Retailer 6$16,240 AUD
Retailer 8$16,542 AUD
Retailer 2$16,796 AUD
Retailer 7$21,605 AUD
NZ Jewellers$23,056 AUD

22 data points across 11 retailers

11 retailers$12,365 AUD to $23,056 AUD

A
Cheapest Retailer
-
$12,365 AUD
HK$67,700 HKD
B+
Retailer 2
-
$12,707 AUD
₹848,110 INR
View
B+
Retailer 3
-
$13,099 AUD
View
B+
Retailer 4
-
$13,453 AUD
$9,428 USD
View
Final sale: no returns
B+
Retailer 5
-
$14,599 AUD
$10,231 USD
View
B+
Retailer 6
-
$15,586 AUD
£8,601 GBP
View
B+
Retailer 7
-
$16,240 AUD
£8,962 GBP
View
B+
Retailer 8
-
$16,542 AUD
$11,593 USD
View
B+
Retailer 9
-
$16,796 AUD
$11,771 USD
View
B
Retailer 10
-
$21,605 AUD
£11,922 GBP
View
Most Expensive
B
NZ Jewellers
8810df37-2833-48b8-ad3a-b2a5b86015f9 · Oct 30
$23,056 AUD
$16,158 USD
View
10 more retailers have this diamond
Prices start from $12,365 AUDSave up to $10,691 AUD

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
$12,365 AUD