CaratHunter
Plans
Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 1246080001

Certificate GIA 1246080001

Diamond specifications and retailer prices

From £3,768 GBP
HK$39,500 HKD
As of October 30, 2026
Save £5,059 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £8,827 GBP at NZ Jewellers · As of November 3, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1246080001. Listed at 16 retailers as of October 30, 2026, with prices from £3,768 to £8,827, a £5,059 spread on the same certified stone. NZ Jewellers lists it at £8,827. 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

1.51
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1246080001
Dimensions11.81 × 6.04 × 3.78 mm
L/W Ratio1.96
Girdle conditionFaceted
Top View
11.81 mm6.04 mm1.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246080001
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.6%

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: Oct 30
Current: £8,827 GBP|Low: £3,710 GBP|High: £8,896 GBP|Avg: £5,153 GBP|-0.8%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 6£3,768 GBP
Retailer 14£3,813 GBP
Retailer 16£3,830 GBP
Retailer 3£4,018 GBP
Retailer 15£4,184 GBP
Retailer 9£4,275 GBP
Retailer 5£4,355 GBP
Retailer 8£4,413 GBP
Retailer 4£4,476 GBP
Retailer 7£4,501 GBP
Retailer 2£4,716 GBP
Retailer 10£4,869 GBP
Retailer 11£5,178 GBP
Retailer 13£5,757 GBP
Retailer 17£7,694 GBP
Retailer 12£7,816 GBP
NZ Jewellers£8,827 GBP

29 data points across 17 retailers

16 retailers£3,768 GBP to £8,827 GBP

B+
Cheapest Retailer
-
£3,768 GBP
HK$39,500 HKD
B+
Retailer 2
-
£3,813 GBP
$5,117 USD
View
A
Retailer 3
-
£3,830 GBP
$5,140 USD
View
B+
Retailer 4
-
£4,018 GBP
$5,392 USD
View
B+
Retailer 5
-
£4,184 GBP
$5,614 USD
View
Retailer 6
-
£4,275 GBP
SGD 7,752 SGD
View
Price last confirmed 26 days ago
B+
Retailer 7
-
£4,355 GBP
A$8,992 AUD
View
B+
Retailer 8
-
£4,476 GBP
$6,006 USD
View
B+
Retailer 9
-
£4,501 GBP
$6,040 USD
View
B+
Retailer 10
-
£4,716 GBP
View
B+
Retailer 11
-
£4,869 GBP
$6,534 USD
View
B+
Retailer 12
-
£5,178 GBP
View
B
Retailer 13
-
£5,757 GBP
€7,358 EUR
View
Retailer 14
-
£7,694 GBP
$10,325 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
£7,816 GBP
View
Most Expensive
B
NZ Jewellers
45ec932c-c21a-4846-992d-3c5cd3648189 · Nov 3
£8,827 GBP
$11,845 USD
View
15 more retailers have this diamond
Prices start from £3,768 GBPSave up to £5,059 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
£3,768 GBP