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Marquise|Natural|GIA

1.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 2235994080

Certificate GIA 2235994080

Diamond specifications and retailer prices

From £5,003 GBP
As of November 2, 2026
Save £4,710 GBP (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £9,713 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2235994080. Listed at 11 retailers as of October 30, 2026, with prices from £5,003 to £9,713, a £4,710 spread on the same certified stone. NZ Jewellers lists it at £9,713. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.28°
Pavilion angle43.32°
OriginNatural
Grading LabGIA
CertificateGIA 2235994080
Dimensions10.60 × 5.95 × 4.04 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
10.60 mm5.95 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2235994080
Side View
Table 63.0%Crown 38.28°Girdle: THK-VTKPavilion 43.32°Culet: NoneDepth 67.8%

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 2
Current: £9,713 GBP|Low: £4,579 GBP|High: £10,138 GBP|Avg: £6,422 GBP|-4.2%
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 2, 2026
Retailer 13£4,579 GBP
Retailer 7£5,003 GBP
Retailer 4£5,112 GBP
Retailer 10£5,224 GBP
Retailer 11£5,358 GBP
Retailer 6£5,510 GBP
Retailer 3£5,752 GBP
Retailer 5£5,753 GBP
Retailer 12£5,807 GBP
Retailer 2£5,838 GBP
Retailer 8£6,570 GBP
Retailer 9£8,093 GBP
NZ Jewellers£9,713 GBP

16 data points across 13 retailers

11 retailers£5,003 GBP to £9,713 GBP

Retailer 1
-
£4,579 GBP
$6,145 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
£5,003 GBP
View
B+
Retailer 3
-
£5,224 GBP
$7,010 USD
View
B+
Retailer 4
-
£5,358 GBP
$7,190 USD
View
B+
Retailer 5
-
£5,510 GBP
View
Retailer 6
-
£5,752 GBP
$7,719 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£5,807 GBP
$7,793 USD
View
B+
Retailer 8
-
£5,838 GBP
$7,834 USD
View
B
Retailer 9
-
£6,570 GBP
$8,816 USD
View
B
Retailer 10
-
£8,093 GBP
View
Most Expensive
C
NZ Jewellers
ac89687c-962d-4a3e-b7d5-3dd3a6415160 · Oct 30
£9,713 GBP
$13,034 USD
View
10 more retailers have this diamond
Prices start from £5,003 GBPSave up to £4,710 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.

B+
1.51ct Marquise
£5,003 GBP