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Round|Lab Grown|GIA

1.63ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • GIA 6442525442

Certificate GIA 6442525442

Diamond specifications and retailer prices

From £271 GBP
$364 USD
As of November 1, 2026
Save £923 GBP (77%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,454 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.63ct lab-grown round diamond

This 1.63ct lab-grown round 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 and certified by GIA 6442525442. Listed at 8 retailers as of October 31, 2026, with a 340% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.63
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabGIA
CertificateGIA 6442525442
Dimensions7.58 × 7.55 × 4.60 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Culet sizeNone
Top View
7.58 mm7.55 mm1.63 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442525442
Side View
Table 57.0%Crown 33.5°Girdle: MTS-MTSPavilion 40.4°Culet: NoneDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £1,454 GBP|Low: £271 GBP|High: £1,487 GBP|Avg: £840 GBP|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 7£271 GBP
Retailer 6£314 GBP
Retailer 5£538 GBP
Retailer 2£540 GBP
Retailer 9£548 GBP
Retailer 3£987 GBP
Retailer 8£1,125 GBP
Retailer 4£1,194 GBP
MOH London£1,454 GBP

19 data points across 9 retailers

8 retailers£271 GBP to £1,194 GBP

A
Cheapest Retailer
-
£271 GBP
$364 USD
A
Retailer 2
-
£314 GBP
$422 USD
View
B+
Retailer 3
-
£538 GBP
$722 USD
View
B+
Retailer 4
-
£540 GBP
$725 USD
View
B
Retailer 5
-
£987 GBP
$1,324 USD
View
B
Retailer 6
-
£1,125 GBP
$1,510 USD
View
B
Retailer 7
-
£1,194 GBP
$1,602 USD
View
Most Expensive
MOH London
6442525442 · Oct 26
£1,454 GBP
View
Price last confirmed 7 days ago
7 more retailers have this diamond
Prices start from £271 GBPSave up to £923 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
1.63ct Round
£271 GBP