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Round|Natural|IGI

1.51ct F SI2 Round Natural Diamond

VG • F/SI2 • IGI 487189405

Shape and cutting style on the report: Round brilliant

Certificate IGI 487189405

Diamond specifications and retailer prices

From £5,153 GBP
₹658,629 INR
As of November 2, 2026
Save £6,303 GBP (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £11,457 GBP at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 487189405. Listed at 20 retailers as of November 2, 2026, with prices from £5,153 to £11,457, a £6,303 spread on the same certified stone. Diamond Quarter lists it at £11,457. 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
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 487189405
Dimensions7.24 × 7.17 × 4.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.24 mm7.17 mm1.51 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 487189405
Side View
Table 59.5%Crown 36.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.9%

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: £5,153 GBP|Low: £5,143 GBP|High: £11,374 GBP|Avg: £7,191 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 1£5,153 GBP
Retailer 7£5,771 GBP
Retailer 12£5,802 GBP
Retailer 9£6,277 GBP
Retailer 11£6,277 GBP
Retailer 2£6,801 GBP
Retailer 10£6,905 GBP
Retailer 8£7,029 GBP
Retailer 5£7,220 GBP
Retailer 4£7,847 GBP
Retailer 6£9,478 GBP
Retailer 3£11,374 GBP

46 data points across 12 retailers

20 retailers£5,153 GBP to £11,457 GBP

B+
Cheapest Retailer
-
£5,153 GBP
₹658,629 INR
B+
Retailer 2
-
£5,771 GBP
$7,745 USD
View
B+
Retailer 3
-
£5,802 GBP
$7,786 USD
View
B+
Retailer 4
-
£5,878 GBP
$7,888 USD
View
B
Retailer 5
-
£6,277 GBP
$8,423 USD
View
Final sale: no returns
Retailer 6
-
£6,277 GBP
$8,424 USD
View
Price last confirmed 9 days ago
Retailer 7
-
£6,801 GBP
$9,126 USD
View
Price last confirmed 11 days ago
Retailer 8
-
£6,801 GBP
$9,126 USD
View
Price last confirmed 46 days ago
Retailer 9
-
£6,801 GBP
$9,126 USD
View
Price last confirmed 47 days ago
Retailer 10
-
£6,905 GBP
$9,266 USD
View
Price last confirmed 11 days ago
B
Retailer 11
-
£6,950 GBP
$9,327 USD
View
B
Retailer 12
-
£7,220 GBP
View
Retailer 13
-
£7,847 GBP
$10,530 USD
View
Price last confirmed 43 days ago
Retailer 14
-
£7,847 GBP
$10,530 USD
View
Price last confirmed 10 days ago
Retailer 15
-
£7,847 GBP
$10,530 USD
View
Price last confirmed 49 days ago
B
Retailer 16
-
£9,478 GBP
View
Retailer 17
-
£11,374 GBP
$15,263 USD
View
Price last confirmed 42 days ago
Retailer 18
-
£11,374 GBP
$15,263 USD
View
Price last confirmed 10 days ago
Retailer 19
-
£11,374 GBP
$15,263 USD
View
Price last confirmed 49 days ago
Most Expensive
C
Diamond Quarter
1.51SI2F480558E2N · Nov 2
£11,457 GBP
View
19 more retailers have this diamond
Prices start from £5,153 GBPSave up to £6,303 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 Round
£5,153 GBP