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Marquise|Lab Grown|IGI

1.17ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG825623091

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825623091

Diamond specifications and retailer prices

From £175 GBP
$235 USD
As of November 1, 2026
Save £347 GBP (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £745 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.17ct lab-grown marquise diamond

This 1.17ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG825623091 or 825623091. Listed at 12 retailers as of November 1, 2026, with a 198% 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

1.17
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30.3°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825623091
Dimensions10.93 × 5.72 × 3.23 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.93 mm5.72 mm1.17 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG825623091
Side View
Table 67.0%Crown 30.3°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 56.5%

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 1
Current: £320 GBP|Low: £112 GBP|High: £817 GBP|Avg: £360 GBP|-12.6%
Retailer 1
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
Reve Diamonds
November 2, 2026
Retailer 13£116 GBP
Retailer 4£126 GBP
Retailer 6£146 GBP
Retailer 5£156 GBP
Retailer 3£175 GBP
Retailer 11£219 GBP
Retailer 10£225 GBP
Retailer 9£251 GBP
Retailer 7£288 GBP
Retailer 1£320 GBP
Retailer 14£455 GBP
Retailer 2£458 GBP
Retailer 8£522 GBP
Retailer 12£603 GBP
Reve Diamonds£745 GBP

37 data points across 15 retailers

12 retailers£175 GBP to £522 GBP

B+
Cheapest Retailer
-
£175 GBP
$235 USD
A
Retailer 2
-
£219 GBP
View
A
Retailer 3
-
£225 GBP
€288 EUR
View
B+
Retailer 4
-
£251 GBP
View
B+
Retailer 5
-
£288 GBP
$387 USD
View
B+
Retailer 6
-
£320 GBP
$429 USD
View
B
Retailer 7
-
£455 GBP
$611 USD
View
B
Retailer 8
-
£458 GBP
$615 USD
View
Retailer 9
-
£503 GBP
$675 USD
View
Price last confirmed 33 days ago
B
Retailer 10
-
£522 GBP
$700 USD
View
Retailer 11
-
£603 GBP
View
Price last confirmed 7 days ago
Most Expensive
Reve Diamonds
ECE0564D0 · Oct 25
£745 GBP
$1,000 USD
View
Price last confirmed 8 days ago
11 more retailers have this diamond
Prices start from £175 GBPSave up to £347 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
1.17ct Marquise
£175 GBP