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Round|Natural|GIA

0.98ct J SI1 Round Natural Diamond

GD • J/SI1 • GIA 1236707187

Certificate GIA 1236707187

Diamond specifications and retailer prices

From £1,315 GBP
As of November 1, 2026
Save £505 GBP (28%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,820 GBP at Jared · As of November 4, 2026
View at Jared

About this 0.98ct natural round diamond

This 0.98ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 1236707187. Listed at 5 retailers as of November 1, 2026, with prices from £1,315 to £1,820, a £505 spread on the same certified stone. Jared lists it at £1,820. 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

0.98
Carat
J
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
Crown angle37°
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 1236707187
Dimensions6.38 × 6.27 × 3.96 mm
L/W Ratio1.02
Culet sizeMedium
Top View
6.38 mm6.27 mm0.98 ctJ / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1236707187
Side View
Table 58.0%Crown 37°Girdle: VTN-THNPavilion 42°Culet: MediumDepth 62.7%

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: £1,820 GBP|Low: £1,079 GBP|High: £1,941 GBP|Avg: £1,624 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 18, 2026
Retailer 9£1,079 GBP
Retailer 2£1,315 GBP
Retailer 8£1,554 GBP
Retailer 3£1,664 GBP
Retailer 4£1,715 GBP
Retailer 6£1,761 GBP
Retailer 7£1,761 GBP
Jared£1,820 GBP
Retailer 5£1,941 GBP

3 data points across 9 retailers

5 retailers£1,315 GBP to £1,820 GBP

B
Cheapest Retailer
-
£1,315 GBP
C
Retailer 2
-
£1,664 GBP
View
C
Retailer 3
-
£1,761 GBP
View
C
Retailer 4
-
£1,761 GBP
View
Most Expensive
C
Jared
156284402 · Nov 4
£1,820 GBP
$2,450 USD
View
4 more retailers have this diamond
Prices start from £1,315 GBPSave up to £505 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
0.98ct Round
£1,315 GBP