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Radiant|Natural|GIA

1.70ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 2566772176

Certificate GIA 2566772176

Diamond specifications and retailer prices

From £5,396 GBP
As of November 6, 2026
Save £6,832 GBP (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,227 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.7ct natural radiant diamond

This 1.7ct natural radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2566772176. Listed at 15 retailers as of November 5, 2026, with prices from £5,396 to £12,227, a £6,832 spread on the same certified stone. NZ Jewellers lists it at £12,227. 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

1.70
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2566772176
Dimensions8.48 × 5.75 × 3.83 mm
L/W Ratio1.47
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
8.48 mm5.75 mm1.70 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2566772176
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £12,227 GBP|Low: £5,396 GBP|High: £12,227 GBP|Avg: £7,659 GBP
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
Retailer 14
Retailer 15
November 7, 2026
Retailer 13£5,396 GBP
Retailer 11£5,601 GBP
Retailer 10£6,203 GBP
Retailer 8£6,321 GBP
Retailer 9£6,634 GBP
Retailer 14£6,678 GBP
Retailer 2£7,287 GBP
Retailer 7£7,310 GBP
Retailer 15£7,428 GBP
Retailer 12£7,452 GBP
Retailer 6£7,475 GBP
Retailer 4£8,280 GBP
Retailer 3£8,919 GBP
Retailer 5£10,161 GBP
NZ Jewellers£12,227 GBP

8 data points across 15 retailers

15 retailers£5,396 GBP to £12,227 GBP

A
Cheapest Retailer
-
£5,396 GBP
A
Retailer 2
-
£5,601 GBP
View
B+
Retailer 3
-
£6,203 GBP
View
B+
Retailer 4
-
£6,321 GBP
View
B+
Retailer 5
-
£6,634 GBP
View
B+
Retailer 6
-
£6,678 GBP
View
B+
Retailer 7
-
£7,287 GBP
View
B
Retailer 8
-
£7,310 GBP
View
B
Retailer 9
-
£7,428 GBP
View
B
Retailer 10
-
£7,452 GBP
View
B
Retailer 11
-
£7,475 GBP
View
B
Retailer 12
-
£8,280 GBP
View
B
Retailer 13
-
£8,919 GBP
View
B
Retailer 14
-
£10,161 GBP
View
Most Expensive
B
NZ Jewellers
37d18cf5-3505-488e-8868-d24db5946a26 · Nov 5
£12,227 GBP
$16,366 USD
View
14 more retailers have this diamond
Prices start from £5,396 GBPSave up to £6,832 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.

A
1.70ct Radiant
£5,396 GBP