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Marquise|Natural|GIA

0.65ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1509582249

Certificate GIA 1509582249

Diamond specifications and retailer prices

From £789 GBP
$1,059 USD
As of November 1, 2026
Save £693 GBP (47%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,482 GBP at Diamond Quarter · As of October 30, 2026
View at Diamond Quarter

About this 0.65ct natural marquise diamond

This 0.65ct natural marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1509582249. Listed at 3 retailers as of October 30, 2026, with prices from £789 to £1,482, a £693 spread on the same certified stone. Diamond Quarter lists it at £1,482. 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

0.65
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1509582249
Dimensions4.57 × 9.01 × 2.79 mm
L/W Ratio1.97
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
4.57 mm9.01 mm0.65 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1509582249
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.0%

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 1
Current: £1,482 GBP|Low: £789 GBP|High: £1,482 GBP|Avg: £1,064 GBP
Diamond Quarter
Retailer 2
Retailer 3
October 13, 2026
Retailer 3£789 GBP
Retailer 2£918 GBP
Diamond Quarter£1,482 GBP

4 data points across 3 retailers

3 retailers£789 GBP to £1,482 GBP

B
Cheapest Retailer
-
£789 GBP
$1,059 USD
B
Retailer 2
-
£918 GBP
SGD 1,665 SGD
View
Most Expensive
C
Diamond Quarter
0.65SI1H15496461KG · Oct 30
£1,482 GBP
View
2 more retailers have this diamond
Prices start from £789 GBPSave up to £693 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
0.65ct Marquise
£789 GBP