CaratHunter
Plans
Heart|Lab Grown|IGI

3.46ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804665160

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804665160

Diamond specifications and retailer prices

From £1,754 GBP
$2,350 USD
As of October 30, 2026
Save £10,337 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £12,091 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.46ct lab-grown heart diamond

This 3.46ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804665160 or 804665160. Listed at 12 retailers as of October 29, 2026, with prices from £1,754 to £12,091, a £10,337 spread on the same certified stone. Do Amore Diamonds lists it at £12,091. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.46
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804665160
Dimensions10.25 × 9.03 × 6.26 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.25 mm9.03 mm3.46 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804665160
Side View
Table 59.0%Crown 37°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 61.1%

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: Oct 30
Current: £12,091 GBP|Low: £1,754 GBP|High: £14,688 GBP|Avg: £5,744 GBP|-17.7%
Do Amore Diamonds
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
October 30, 2026
Retailer 2£1,754 GBP
Retailer 14£1,912 GBP
Retailer 10£2,054 GBP
Retailer 12£2,161 GBP
Retailer 15£2,367 GBP
Retailer 4£2,506 GBP
Retailer 13£3,093 GBP
Retailer 11£3,124 GBP
Retailer 9£3,181 GBP
Retailer 5£4,821 GBP
Retailer 8£6,056 GBP
Retailer 6£8,072 GBP
Retailer 7£11,251 GBP
Retailer 3£11,434 GBP
Do Amore Diamonds£12,091 GBP

26 data points across 15 retailers

12 retailers£1,754 GBP to £12,091 GBP

A
Cheapest Retailer
-
£1,754 GBP
$2,350 USD
A
Retailer 2
-
£1,912 GBP
$2,562 USD
View
A
Retailer 3
-
£2,054 GBP
$2,752 USD
View
A
Retailer 4
-
£2,161 GBP
$2,895 USD
View
A
Retailer 5
-
£2,367 GBP
$3,172 USD
View
A
Retailer 6
-
£2,506 GBP
$3,358 USD
View
Final sale: no returns
A
Retailer 7
-
£3,093 GBP
$4,144 USD
View
A
Retailer 8
-
£3,124 GBP
$4,186 USD
View
A
Retailer 9
-
£3,181 GBP
$4,262 USD
View
B+
Retailer 10
-
£6,056 GBP
View
B
Retailer 11
-
£11,434 GBP
$15,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-2325124FE · Oct 29
£12,091 GBP
$16,200 USD
View
11 more retailers have this diamond
Prices start from £1,754 GBPSave up to £10,337 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
3.46ct Heart
£1,754 GBP