CaratHunter
Plans
Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6562577541

Certificate GIA 6562577541

Diamond specifications and retailer prices

From £6,458 GBP
HK$67,700 HKD
As of November 1, 2026
Save £5,583 GBP (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £12,041 GBP 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 £6,458 to £12,041, a £5,583 spread on the same certified stone. NZ Jewellers lists it at £12,041. 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: £12,041 GBP|Low: £6,458 GBP|High: £12,348 GBP|Avg: £8,557 GBP|-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£6,458 GBP
Retailer 4£6,636 GBP
Retailer 9£6,841 GBP
Retailer 3£7,026 GBP
Retailer 10£7,624 GBP
Retailer 5£8,140 GBP
Retailer 6£8,481 GBP
Retailer 8£8,639 GBP
Retailer 2£8,772 GBP
Retailer 7£11,283 GBP
NZ Jewellers£12,041 GBP

22 data points across 11 retailers

11 retailers£6,458 GBP to £12,041 GBP

A
Cheapest Retailer
-
£6,458 GBP
HK$67,700 HKD
B+
Retailer 2
-
£6,636 GBP
₹848,110 INR
View
B+
Retailer 3
-
£6,841 GBP
A$14,123 AUD
View
B+
Retailer 4
-
£7,026 GBP
$9,428 USD
View
Final sale: no returns
B+
Retailer 5
-
£7,624 GBP
$10,231 USD
View
B+
Retailer 6
-
£8,140 GBP
View
B+
Retailer 7
-
£8,481 GBP
View
B+
Retailer 8
-
£8,639 GBP
$11,593 USD
View
B+
Retailer 9
-
£8,772 GBP
$11,771 USD
View
B
Retailer 10
-
£11,283 GBP
View
Most Expensive
B
NZ Jewellers
8810df37-2833-48b8-ad3a-b2a5b86015f9 · Oct 30
£12,041 GBP
$16,158 USD
View
10 more retailers have this diamond
Prices start from £6,458 GBPSave up to £5,583 GBP

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
£6,458 GBP