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Radiant|Lab Grown|GIA

1.73ct D IF Radiant Lab Grown Diamond

GD • D/IF • GIA 6491874605

Certificate GIA 6491874605

Diamond specifications and retailer prices

From £1,266 GBP
$1,696 USD
As of October 31, 2026
Save £3,022 GBP (70%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,288 GBP at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 1.73ct lab-grown radiant diamond

This 1.73ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6491874605. Listed at 7 retailers as of October 29, 2026, with prices from £1,266 to £4,288, a £3,022 spread on the same certified stone. Frank Darling lists it at £4,288. 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

1.73
Carat
D
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6491874605
Dimensions8.46 × 6.03 × 4.07 mm
L/W Ratio1.40
Top View
8.46 mm6.03 mm1.73 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6491874605
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.4%

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: Oct 31
Current: £4,288 GBP|Low: £1,266 GBP|High: £7,829 GBP|Avg: £3,563 GBP|-5.4%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 23, 2026
Retailer 7£1,266 GBP
Retailer 8£1,731 GBP
Retailer 5£2,263 GBP
Retailer 2£2,429 GBP
Retailer 3£2,694 GBP
Retailer 4£2,919 GBP
Frank Darling£4,288 GBP
Retailer 9£6,767 GBP
Retailer 6£7,829 GBP

15 data points across 9 retailers

7 retailers£1,266 GBP to £4,288 GBP

B+
Cheapest Retailer
-
£1,266 GBP
$1,696 USD
B
Retailer 2
-
£2,263 GBP
$3,032 USD
View
Retailer 3
-
£2,429 GBP
€3,100 EUR
View
Price last confirmed 7 days ago
B
Retailer 4
-
£2,694 GBP
$3,610 USD
View
Retailer 5
-
£2,919 GBP
A$6,017 AUD
View
Price last confirmed 30 days ago
Most Expensive
B
Frank Darling
LGF699902JA · Oct 29
£4,288 GBP
$5,745 USD
View
5 more retailers have this diamond
Prices start from £1,266 GBPSave up to £3,022 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+
1.73ct Radiant
£1,266 GBP