CaratHunter
Plans
Heart|Lab Grown|IGI

5.50ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG592358586

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG592358586

Diamond specifications and retailer prices

From £7,459 GBP
$9,994 USD
As of October 30, 2026
Save £26,361 GBP (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £33,820 GBP at Michael Trio · As of October 31, 2026
View at Michael Trio

About this 5.5ct lab-grown heart diamond

This 5.5ct lab-grown heart sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG592358586 or 592358586. Listed at 19 retailers as of October 30, 2026, with prices from £7,459 to £33,820, a £26,361 spread on the same certified stone. Michael Trio lists it at £33,820. 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

5.50
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG592358586
Dimensions11.43 × 11.74 × 7.12 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
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
11.43 mm11.74 mm5.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG592358586
Side View
Table 59.0%Crown 39.7°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 60.6%

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: £33,820 GBP|Low: £7,160 GBP|High: £46,541 GBP|Avg: £16,407 GBP
Michael Trio
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 1, 2026
Retailer 20£7,459 GBP
Retailer 6£7,556 GBP
Retailer 5£7,757 GBP
Retailer 8£8,354 GBP
Retailer 19£8,549 GBP
Retailer 21£8,652 GBP
Retailer 4£8,951 GBP
Retailer 22£9,236 GBP
Retailer 18£9,472 GBP
Retailer 15£9,887 GBP
Retailer 16£11,281 GBP
Retailer 7£11,877 GBP
Retailer 13£14,660 GBP
Retailer 11£15,537 GBP
Retailer 17£19,404 GBP
Retailer 2£19,722 GBP
Retailer 12£21,278 GBP
Retailer 3£22,155 GBP
Retailer 10£23,810 GBP
Retailer 14£28,489 GBP
Michael Trio£33,820 GBP
Retailer 9£46,541 GBP

24 data points across 22 retailers

19 retailers£7,459 GBP to £33,820 GBP

A
Cheapest Retailer
-
£7,459 GBP
$9,994 USD
A
Retailer 2
-
£7,556 GBP
$10,124 USD
View
A
Retailer 3
-
£7,757 GBP
$10,394 USD
View
A
Retailer 4
-
£8,354 GBP
$11,193 USD
View
Final sale: no returns
A
Retailer 5
-
£8,549 GBP
$11,455 USD
View
A
Retailer 6
-
£8,652 GBP
$11,593 USD
View
A
Retailer 7
-
£8,951 GBP
$11,993 USD
View
A
Retailer 8
-
£9,236 GBP
$12,375 USD
View
A
Retailer 9
-
£9,472 GBP
$12,691 USD
View
A
Retailer 10
-
£11,281 GBP
View
A
Retailer 11
-
£11,877 GBP
$15,914 USD
View
A
Retailer 12
-
£14,660 GBP
View
B+
Retailer 13
-
£19,404 GBP
ZAR 420,027 ZAR
View
B+
Retailer 14
-
£19,722 GBP
A$40,654 AUD
View
B+
Retailer 15
-
£22,155 GBP
$29,685 USD
View
B+
Retailer 16
-
£23,810 GBP
$31,903 USD
View
B
Retailer 17
-
£28,489 GBP
$38,172 USD
View
Most Expensive
B
Michael Trio
6533574000 · Oct 31
£33,820 GBP
SGD 61,237 SGD
View
17 more retailers have this diamond
Prices start from £7,459 GBPSave up to £26,361 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
5.50ct Heart
£7,459 GBP