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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 5556531806

Certificate GIA 5556531806

Diamond specifications and retailer prices

From £8,005 GBP
As of November 6, 2026
Save £5,161 GBP (39%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £13,166 GBP 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 H 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 5556531806. Listed at 11 retailers as of November 5, 2026, with prices from £8,005 to £13,166, a £5,161 spread on the same certified stone. NZ Jewellers lists it at £13,166. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556531806
Dimensions10.98 × 5.75 × 3.67 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle, Natural
Top View
10.98 mm5.75 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556531806
Side View
Table 61.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £8,184 GBP|Low: £8,184 GBP|High: £12,486 GBP|Avg: £10,042 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£8,184 GBP
Retailer 3£8,454 GBP
Retailer 7£8,582 GBP
Retailer 2£8,853 GBP
Retailer 6£9,913 GBP
Retailer 4£11,526 GBP
Retailer 5£12,304 GBP

40 data points across 7 retailers

11 retailers£8,005 GBP to £13,166 GBP

B
Cheapest Retailer
-
£8,005 GBP
B
Retailer 2
-
£8,184 GBP
View
B
Retailer 3
-
£8,454 GBP
View
Retailer 4
-
£8,582 GBP
View
Price last confirmed 15 days ago
B
Retailer 5
-
£8,813 GBP
View
B
Retailer 6
-
£8,853 GBP
View
B
Retailer 7
-
£9,411 GBP
View
B
Retailer 8
-
£9,913 GBP
View
B
Retailer 9
-
£11,526 GBP
View
B
Retailer 10
-
£12,304 GBP
View
Most Expensive
C
NZ Jewellers
01211c48-ab80-4a2d-a4fc-f3dd241d3655 · Nov 5
£13,166 GBP
$17,623 USD
View
10 more retailers have this diamond
Prices start from £8,005 GBPSave up to £5,161 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
£8,005 GBP