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Radiant|Natural|GIA

1.70ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 1563494558

Certificate GIA 1563494558

Diamond specifications and retailer prices

From £6,735 GBP
As of November 6, 2026
Save £5,710 GBP (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £12,445 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 1563494558. Listed at 19 retailers as of November 5, 2026, with prices from £6,735 to £12,445, a £5,710 spread on the same certified stone. NZ Jewellers lists it at £12,445. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563494558
Dimensions7.87 × 5.84 × 3.97 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.87 mm5.84 mm1.70 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563494558
Side View
Table 69.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.0%

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 6
Current: £12,445 GBP|Low: £6,735 GBP|High: £12,445 GBP|Avg: £8,900 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
Retailer 16
Retailer 17
November 7, 2026
Retailer 12£6,735 GBP
Retailer 9£7,191 GBP
Retailer 4£7,556 GBP
Retailer 5£7,647 GBP
Retailer 3£8,069 GBP
Retailer 11£8,099 GBP
Retailer 15£8,132 GBP
Retailer 2£8,363 GBP
Retailer 6£8,901 GBP
Retailer 8£8,929 GBP
Retailer 13£8,953 GBP
Retailer 16£9,066 GBP
Retailer 7£9,141 GBP
Retailer 17£10,303 GBP
Retailer 14£10,894 GBP
Retailer 10£11,599 GBP
NZ Jewellers£12,445 GBP

8 data points across 17 retailers

19 retailers£6,735 GBP to £12,445 GBP

B+
Cheapest Retailer
-
£6,735 GBP
B+
Retailer 2
-
£6,835 GBP
View
B+
Retailer 3
-
£7,002 GBP
View
B+
Retailer 4
-
£7,191 GBP
View
Final sale: no returns
B
Retailer 5
-
£7,556 GBP
View
B+
Retailer 6
-
£7,647 GBP
View
B
Retailer 7
-
£8,069 GBP
View
B+
Retailer 8
-
£8,099 GBP
View
B
Retailer 9
-
£8,132 GBP
View
B+
Retailer 10
-
£8,363 GBP
View
B
Retailer 11
-
£8,901 GBP
View
B
Retailer 12
-
£8,929 GBP
View
B
Retailer 13
-
£8,953 GBP
View
B
Retailer 14
-
£9,066 GBP
View
B
Retailer 15
-
£9,141 GBP
View
B
Retailer 16
-
£10,303 GBP
View
B
Retailer 17
-
£10,894 GBP
View
B
Retailer 18
-
£11,599 GBP
View
Most Expensive
B
NZ Jewellers
cefa5043-83a5-41e7-af88-1276f045b7ec · Nov 5
£12,445 GBP
$16,658 USD
View
18 more retailers have this diamond
Prices start from £6,735 GBPSave up to £5,710 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+
1.70ct Radiant
£6,735 GBP