Radiant|Lab Grown|IGI

4.88ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG812621042

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG812621042

Diamond specifications and retailer prices

From $5,874 USD
As of November 1, 2026
Save $15,839 USD (73%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $21,713 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.88ct lab-grown radiant diamond

This 4.88ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812621042 or 812621042. Listed at 22 retailers as of October 31, 2026, with prices from $5,874 to $21,713, a $15,839 spread on the same certified stone. Taylor and Hart lists it at $21,713. 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

4.88
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621042
Dimensions12.04 × 8.44 × 5.61 mm
L/W Ratio1.43
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
12.04 mm8.44 mm4.88 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621042
Side View
Table 65.0%Crown 43.4°Girdle: MediumPavilion 35.5°Culet: NoneDepth 66.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $7,731 USD|Low: $5,874 USD|High: $22,092 USD|Avg: $11,665 USD|-4.4%
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
Retailer 15
Retailer 16
Taylor and Hart
November 2, 2026
Retailer 4$5,874 USD
Retailer 2$6,100 USD
Retailer 12$6,921 USD
Retailer 1$7,731 USD
Retailer 16$8,626 USD
Retailer 8$8,715 USD
Retailer 15$8,933 USD
Retailer 6$9,395 USD
Retailer 11$9,965 USD
Retailer 3$10,869 USD
Retailer 9$12,381 USD
Retailer 13$12,950 USD
Retailer 10$13,386 USD
Retailer 5$16,445 USD
Retailer 14$16,920 USD
Retailer 7$16,940 USD
Taylor and Hart$21,713 USD

36 data points across 17 retailers

22 retailers$5,874 USD to $21,713 USD

Retailer 1
-
$5,356 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$5,874 USD
View
Final sale: no returns
A
Retailer 3
-
$6,100 USD
View
Retailer 4
-
$6,170 USD
View
Price last confirmed 37 days ago
Retailer 5
-
$6,213 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$6,213 USD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$6,921 USD
View
Retailer 8
-
$7,376 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
$7,731 USD
£6,087 GBP
View
B+
Retailer 10
-
$8,626 USD
£6,792 GBP
View
B+
Retailer 11
-
$8,715 USD
View
B+
Retailer 12
-
$8,933 USD
View
B+
Retailer 13
-
$9,395 USD
View
B+
Retailer 14
-
$9,965 USD
€9,490 EUR
View
B+
Retailer 15
-
$10,869 USD
View
B+
Retailer 16
-
$12,381 USD
£9,749 GBP
View
B+
Retailer 17
-
$12,950 USD
ZAR 209,207 ZAR
View
B+
Retailer 18
-
$13,386 USD
A$20,594 AUD
View
B
Retailer 19
-
$16,445 USD
View
B
Retailer 20
-
$16,920 USD
View
B
Retailer 21
-
$16,940 USD
View
Most Expensive
B
Taylor and Hart
3PMCSWU · Oct 31
$21,713 USD
View
21 more retailers have this diamond
Prices start from $5,874 USDSave up to $15,839 USD

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
4.88ct Radiant
$5,874 USD