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Emerald|Lab Grown|IGI

4.28ct D IF Emerald Lab Grown Diamond

EX • D/IF • IGI LG691526188

Certificate IGI LG691526188

Diamond specifications and retailer prices

From $4,659 USD
Save $16,471 USD (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $21,130 USD at Brilliant Earth
View at Brilliant Earth

About this 4.28ct lab-grown emerald diamond

This 4.28ct lab-grown emerald 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 LG691526188 or 691526188. Listed at 24 retailers, with prices from $4,659 to $21,130 at Brilliant Earth, a $16,471 spread on the same certified stone. 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

4.28
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691526188
Dimensions11.28 × 7.57 × 4.91 mm
L/W Ratio1.49
Culet sizeLarge
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
11.28 mm7.57 mm4.28 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691526188
Side View
Table 63.0%Crown 35.6°Girdle: MediumPavilion 40.7°Culet: LargeDepth 64.9%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $21,130 USD|Low: $3,725 USD|High: $21,180 USD|Avg: $9,292 USD|-0.2%
Brilliant Earth
Retailer 2
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Retailer 23
September 29, 2026
Retailer 3$4,659 USD
Retailer 21$4,882 USD
Retailer 23$5,078 USD
Retailer 5$5,216 USD
Retailer 4$5,330 USD
Retailer 20$5,404 USD
Retailer 8$5,440 USD
Retailer 15$6,426 USD
Retailer 14$6,429 USD
Retailer 19$6,753 USD
Retailer 13$7,130 USD
Retailer 12$7,308 USD
Retailer 6$7,620 USD
Retailer 18$8,070 USD
Retailer 7$8,180 USD
Retailer 10$9,512 USD
Retailer 2$11,293 USD
Retailer 9$11,315 USD
Retailer 17$11,325 USD
Retailer 11$15,020 USD
Retailer 22$18,612 USD
Retailer 16$19,335 USD
Brilliant Earth$21,130 USD

37 data points across 23 retailers

24 retailers$4,659 USD to $21,130 USD

A
Cheapest Retailer
-
$4,659 USD
A
Retailer 2
-
$4,882 USD
View
A
Retailer 3
-
$5,078 USD
View
A
Retailer 4
-
$5,216 USD
View
A
Retailer 5
-
$5,330 USD
View
A
Retailer 6
-
$5,404 USD
View
A
Retailer 7
-
$5,440 USD
View
A
Retailer 8
-
$6,426 USD
HK$50,200 HKD
View
A
Retailer 9
-
$6,429 USD
View
A
Retailer 10
-
$6,753 USD
View
A
Retailer 11
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$7,117 USD
£5,604 GBP
View
A
Retailer 12
-
$7,308 USD
View
A
Retailer 13
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$7,620 USD
£6,000 GBP
View
B+
Retailer 14
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$8,070 USD
View
B+
Retailer 15
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$8,180 USD
View
B+
Retailer 16
-
$9,512 USD
£7,490 GBP
View
B+
Retailer 17
-
$10,591 USD
View
B+
Retailer 18
-
$11,293 USD
ZAR 182,432 ZAR
View
B+
Retailer 19
-
$11,315 USD
View
B+
Retailer 20
-
$11,325 USD
£8,917 GBP
View
B
Retailer 21
-
$15,020 USD
View
B
Retailer 22
-
$18,612 USD
SGD 25,152 SGD
View
B
Retailer 23
-
$19,335 USD
View
Most Expensive
B
Brilliant Earth
13567473A · Sep 29
$21,130 USD
View
23 more retailers have this diamond
Prices start from $4,659 USDSave up to $16,471 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.

A
4.28ct Emerald
$4,659 USD